Yarrow, Achellia is a fernlike perennial that will take over
a perennial bed and it will relentlessly spread its seeds and underground
rhizomes across your flower beds and into your yard. The real deal breaker with
this plant is that its seeds can live in the ground for 9 years, so there is no
getting rid of it once you have it. The best way to control this is by not
planting it ever and making sure that your neighbors follow suit. This plant
can handle any soil type as well. This plant will crush your spirits and haunt
your dreams. This plant has landed itself on mylist of 10 most invasive landscape plants.